Air-cushion.



No. 8l4',829; PATENTED M-AR.- 13, 1906.

H. A. CARL. AIR CUSHION.

APPLICATION FILED H AY 2, 19M.

I :UNITED sTATEs PATENT oEEIoE. l

HARRIET A. CARL, OF WEST FULTON, NEW YORK.

` AIR-CUSHION.

Specification of Letters Patent;

.Patented March 13, 1906.

Applikation filed May z, 1004. serai No. 200,001.

To all whom t may concern:

Be it-known that I, HAEEIET A. CARL, a citizen of the United States, residing at West Fulton, in thecounty of Schoharie and State of New York, haveinvented a new and-useful Air-Cushion, of which the following is a specification. l

This invention relates generally to aircushions, and more particularly to a cushion to be used in hospitals, and especially for the use of patients suffering from sores which would be irritated by being laid upon.

.ing a cushion from a series of inflatable bags The object of the invention is to provide a cushion of such construction that air can circulate freely through the lsame and also one which will permit the free circulation of blood to and from the affected parts, thereby greatly Jfacilitating the growth of new tissue and the eventual healing of the sore.

The invention consists, essentially, in makconnected at their inner ends in a suitable manner and at their outer ends by means of an inflatin'g-tube, said inflatable bags being separated from each other, providing alternate vacant spaces for the free circulation ofv blood and air.

The invention consists also in certain details of construction and novelties of combination, all of which will be fully described hereinafter and pointed out in the claim.

In the drawings forming part of this specification, Figure 1 is a perspective view of an air-cushion constructed in accordance with my invention. Fig. 2 is a top plan view, partly in section. Fig. 3 is a transverse sectional view on the lineB 3 of Fig. 2.

In constructing an air-cushion in accordance with my invention I employa series of inflatable bags A, which are preferably conl structed of rubber, and it will o f course be understood that they may be made of any other suitable material. These bags are connected attheir inner end to a circular armB, said bags being spaced a considerable distance from each other, as most clearly shown, and are connected at their outer ends to a'circular tube or pi e C, which serves as a common inhating-tu e vfor the entire series of bags, the air being introduced through the vent-tube C which is provided with a screw-cap C2.

D indicates the 'spaces between the series of iniiatable bags, and E is the open space in the center.

An air-cushion constructed as herein shown and described is not subject to the objections of the ordinary air cushion or pillow, every point of which comes in contact with the body. Avery slight movement of a cushion constructed as hereindescribed changes the pressure to other points and also permits the free circulation of air and blood to those parts previously affected by the pressure.

While I have shown and described a cushion comprising only four iniiatable bags, it is obvious that any desired number may be employed, and although I have shown them arrangedl in circular form it will also be understood that the cushions may be made in any other shape desired. v

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

A cushion comprising a central ring, a plurality of inflatable bags connected thereto, and an iniating-tube connecting the outer ends of 'said bags.

I-IARRIET A. CARL. 

